Think of that sheet as a brainstorming sheet. You might make notes there about the Screen Presence arc like, "Spotlight early" or "Resolves in the finale" or just record the Screen Presence numbers there. Alternatively you could use that to describe the general way the arc will progress in the season. To use the veteran-brother from the Bootleggers example in the book, "Faces the horror early in the season, then spends the rest showing his slow recovery."